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  • Nov 12, 2026, 7:50 PM

    Microsoft has some more info on X about the Outlook outage.

    Earlier tweets pointed to network traffic overload.

    The last tweet seems to indicate server issues.

    Do these servers use Nvidia GPUs? Just asking ...

    2/n

    Tweets from thread by Microsoft 365 Status @MSFT365Status

We're aggressively pursuing all pathways to reduce impact. We've paused all deployments, we're moving additional traffic off the affected infrastructure, and we're restarting affected servers to return them to service. More info under EX1550543 and MO1550821 in the Microsoft 365 admin center, as well as http://status.cloud.microsoft if the admin center is not available to you.

We determined the elevated load isn't driven by an increase in traffic, but by a number of servers being unexpectedly unavailable; straining the remaining infrastructure. We're working to safely return them to service. More info under EX1550543 and MO1550821 in the Microsoft 365 admin center, as well as http://status.cloud.microsoft if the admin center is not available to you.
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